render target zooming

TODO: Move this to a more general camera class

Author: HeliumAnt

Source/Renderer/RenderTarget.cpp

@@ -52,7 +52,7 @@ RenderTarget::~RenderTarget() {
 	rlUnloadTexture(m_Depth.id);
 }
 
-void RenderTarget::Begin(bool clear) {
+void RenderTarget::Begin(bool clear, float zoom) {
 	rlDrawRenderBatchActive();
 	rlResetDrawDepth();
 	rlEnableFramebuffer(m_FBO);
@@ -65,6 +65,10 @@ void RenderTarget::Begin(bool clear) {
 	rlMatrixMode(RL_PROJECTION);
 	rlLoadIdentity();
 	rlOrtho(0.0f, m_Size.w, m_Size.h, 0.0f, c_NearDepth, c_FarDepth);
+	rlTranslatef(m_Size.w / 2, m_Size.h / 2, 0.0f);
+	rlScalef(zoom, zoom, 1.0f);
+	rlTranslatef(-m_Size.w / 2, -m_Size.h / 2, 0.0f);
+	rlMatrixMode(RL_MODELVIEW);
 	rlMatrixMode(RL_MODELVIEW);
 	rlLoadIdentity();
 

Source/Renderer/RenderTarget.h

@@ -21,7 +21,7 @@ namespace RTE {
 
 		/// Enables this RenderTarget for drawing and sets up projection matrix. Draws current batch, resets draw depth and model matrix.
 		/// @param clear Whether to clear the target.
-		void Begin(bool clear = true);
+		void Begin(bool clear = true, float zoom = 1.0f);
 
 		/// Disables this RenderTarget and flushes the active batch.
 		void End();